How many different arrangements of 5 letters can be formed if the first letter must be W or K (repeats of letters are allowed) ?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?